tetraphosphine, the cis-cis-cis-1,2,3,4-tetrakis(diphenylphosphinomethyl)cyclopentane (Tedicyp) has been synthesized and used in palladium-catalyzed reactions. This tetraphosphine in combination with [Pd(C3H5)Cl]2 affords a very efficient catalyst for coupling reactions. Turnover numbers of 980 000 for allylic amination, 9 800 000 for allylic alkylation and 97 000 000 for Suzuki cross-coupling can be obtained
Synthesis 2001, No. 15, 12 11 2001。文章标识符:1437-210X,E;2001,0,15,2320,2326,ftx,en;C03901SS.pdf。© Georg Thieme Verlag Stuttgart · 纽约 ISSN 0039-7881 摘要:一种新的四膦,即顺-顺-顺-1,2,3,4-四(
二苯基膦甲基)
环戊烷(Tedicyp)已被合成并用于
钯催化反应。这种与 [Pd(
C3H5)Cl]2 结合的四膦为偶联反应提供了一种非常有效的催化剂。在该催化剂的存在下,
烯丙基胺化的转化数为 980 000,烯丙基烷基化的转化数为 9 800 000,Suzuki 交叉偶联的转化数为 97 000 000。